74 lines
2.4 KiB
LLVM
74 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
|
|
; RUN: opt -passes=newgvn -S < %s | FileCheck %s
|
|
|
|
@c = global i32 0, align 4
|
|
|
|
; Function Attrs: nounwind optsize uwtable
|
|
define i32 @main(i1 %cond1, i32 %arg0, i32 %arg1) {
|
|
; CHECK-LABEL: define i32 @main(
|
|
; CHECK-SAME: i1 [[COND1:%.*]], i32 [[ARG0:%.*]], i32 [[ARG1:%.*]]) {
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[COND1]], label [[BB1:%.*]], label [[BB3:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[ARG0]], 1
|
|
; CHECK-NEXT: [[COND2:%.*]] = icmp eq i32 [[ARG1]], 0
|
|
; CHECK-NEXT: br i1 [[COND2]], label [[BB3]], label [[BB2:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: [[COND3:%.*]] = icmp ne i32 [[XOR1]], 0
|
|
; CHECK-NEXT: tail call void @llvm.assume(i1 [[COND3]])
|
|
; CHECK-NEXT: br label [[BB3]]
|
|
; CHECK: bb3:
|
|
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ undef, [[ENTRY:%.*]] ], [ [[XOR1]], [[BB1]] ], [ [[XOR1]], [[BB2]] ]
|
|
; CHECK-NEXT: [[XOR2:%.*]] = xor i32 [[PHI]], -1
|
|
; CHECK-NEXT: [[LD:%.*]] = load i32, ptr @c, align 4
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[LD]], [[XOR2]]
|
|
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[OR]], 0
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[PHI]], 0
|
|
; CHECK-NEXT: [[COND4:%.*]] = or i1 [[CMP1]], [[CMP2]]
|
|
; CHECK-NEXT: br i1 [[COND4]], label [[EXIT1:%.*]], label [[EXIT2:%.*]]
|
|
; CHECK: exit1:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: exit2:
|
|
; CHECK-NEXT: ret i32 1
|
|
;
|
|
entry:
|
|
; entry
|
|
; / |
|
|
; bb1 |
|
|
; / | |
|
|
; bb2 | |
|
|
; \| |
|
|
; bb3
|
|
; / \
|
|
; exit1 exit2
|
|
br i1 %cond1, label %bb1, label %bb3
|
|
|
|
bb1: ; preds = %entry
|
|
%xor1 = xor i32 %arg0, 1
|
|
%cond2 = icmp eq i32 %arg1, 0
|
|
br i1 %cond2, label %bb3, label %bb2
|
|
|
|
bb2: ; preds = %bb1
|
|
%cond3 = icmp ne i32 %xor1, 0
|
|
tail call void @llvm.assume(i1 %cond3)
|
|
br label %bb3
|
|
|
|
bb3: ; preds = %bb2, %bb1, %entry
|
|
%phi = phi i32 [ undef, %entry ], [ %xor1, %bb1 ], [ %xor1, %bb2 ]
|
|
%xor2 = xor i32 %phi, -1
|
|
%ld = load i32, ptr @c, align 4
|
|
%or = or i32 %ld, %xor2
|
|
%cmp1 = icmp eq i32 %or, 0
|
|
%cmp2 = icmp eq i32 %phi, 0
|
|
%cond4 = or i1 %cmp1, %cmp2
|
|
br i1 %cond4, label %exit1, label %exit2
|
|
|
|
exit1: ; preds = %bb3
|
|
ret i32 0
|
|
|
|
exit2: ; preds = %bb3
|
|
ret i32 1
|
|
}
|
|
|
|
declare void @llvm.assume(i1 noundef)
|